Grounding Problem/落地問題

Attach an example of star grounding hope it may helps.

ACCPHOTO,

I had some doubt need your advice.

For the choke say 15H, 150mA, does it mean that we should use minimum 150mA? if the mA <150 will create problem?

my power trnsformer is 100mA, before add in the choke, voltage afetr tube rectifier is 350V  but when add in the choke it become ~700v and above....i read a book by jone morgan say if mA too small for choke may create problem like this..any method to slove it?

i remove the choke and use CRC after the tube rectifier, still same problem , voltage will got very high... >500V

but if connect the choke without cap to the rectifier tube then the voltage is ok ~350v

maybe i should fully connect to the load then only test it right?